<xx-toolbar-for-user></xx-toolbar-for-user>
<md-content>
    <div layout="column" layout-align="center center">
    	<img src="../../../src/images/introduce.jpg">
        <div class="quesstion-button-introduce">
            <md-button ng-click='back()' class="md-raised md-primary" style="height:50px;width:150px;font-size:1em;border-radius:10px;">我要提问</md-button>
        </div>
        <div style="height:80px;"></div>
    </div>
</md-content>